Possible effects when using a biosafety cabinet

Shanghai Xinzhuang Instrument Co., Ltd. Xinzhuang (LNB) brand biosafety cabinet is used to protect the operator and the laboratory environment when it is used to process infectious materials such as primary cultures, bacterial strains and diagnostic specimens. The materials are designed to avoid exposure to infectious aerosols and spills that may occur during the above operations.
For the technical indicators of Shanghai Xinzhuang Biological Safety Cabinet, please refer to the following indicators:
1. The speed at which the position air enters the biosafety cabinet through the front opening is approximately 0.45 m/s. Directional airflow at such speeds is highly susceptible to interference, including airflow from personnel approaching the biosafety cabinet, opening windows, air supply system adjustments, and opening and closing doors.
Therefore, it is desirable that the biosafety cabinet be located in a place where personnel activities, items flow, and where airflow may be disturbed. Keep as much as 30 cm of space behind the safety cabinet and on each side to take advantage of the maintenance of the safety cabinet. A space of 30-35 cm should be left on the top of the safety cabinet to accurately measure the speed of the air passing through the exhaust filter and to facilitate the replacement of the exhaust filter.
2. If the operator's biosafety cabinet is used improperly, its protective effect may be greatly affected. Operators need to be careful to maintain the integrity of the airflow in the front opening as they move in and out of the safety cabinet. The arms should move vertically in and out of the front opening.
The hand and arms are extended into the biosafety cabinet for about one minute, so that the safety cabinet can be adjusted and the air inside can be swept over the surface of the hands and arms before the item can be processed. Place all necessary items in the safety cabinet before starting the experiment to minimize the number of times your arms enter and exit the front opening.
3. Item placement The air intake grille on the front of the secondary biosafety cabinet cannot be blocked by paper, equipment or other items. Items placed in the safety cabinet should use 70% alcohol to eliminate surface contamination. Experiments can be performed on a towel soaked with disinfectant to absorb droplets that may be spilled. All items should be placed as close as possible to the edge of the workbench at the back of the workbench and will not block the alternate grille during operation. Equipment that produces aerosols (such as mixers, centrifuges, etc.) should be placed close to the rear of the cabinet. Large-volume items such as biohazard waste bags, trays containing discarded straws, and suction filters should be placed on one side of the cabinet. The experimental operation on the work surface should be in the direction from the clean area to the contaminated area.

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